starmac_tools::timeseries Namespace Reference

Functions
def	quaternion_to_eulerypr
def	uniform_resample
Variables
int	N = 10
tuple	quats = (np.empty(N), np.empty(N), np.empty(N), np.empty(N))
tuple	t1 = np.linspace(0, 10, 10)
tuple	t2 = np.linspace(0.1,12.5,20)
tuple	x1 = np.sin(t1)
tuple	x2 = np.cos(t2)

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Function Documentation

def starmac_tools.timeseries.quaternion_to_eulerypr

(

quat_series

)

Convert a series of quaternions to the equivalent Euler angle (yaw-pitch-roll) representation.

Input: tuple of 1-d vectors (w, x, y, z)
Output: tuple of 1-d vectors (yaw, pitch, roll) in radians

Definition at line 77 of file timeseries.py.

def starmac_tools.timeseries.uniform_resample	(		inputs,
			dt
	)

In general time series data t, x will have non-uniform sampling interval and further
in a large system there may be several sources of data with different sampling times.

This function takes a tuple of tuples as input. Each of the inner tuples must contain as its
first element a 'kind' argument (per the kind argument of scipy.interpolate.interp1d; you
probably want to use either 'linear' or 'zero'). The second element of the tuple is a numpy array
of input sample times, and as its remaining elements, 1-D arrays of the
data to be resampled.

The second argument, dt, is the desired output sample period.

The output will first a vector of the new sample times, and second, a tuple of tuples, 
the outer tuple of which is the same length as the input one.
Each inner tuple will have the data, resampled as requested. 

Definition at line 44 of file timeseries.py.

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Variable Documentation

int starmac_tools::timeseries::N = 10

Definition at line 101 of file timeseries.py.

tuple starmac_tools::timeseries::quats = (np.empty(N), np.empty(N), np.empty(N), np.empty(N))

Definition at line 102 of file timeseries.py.

tuple starmac_tools::timeseries::t1 = np.linspace(0, 10, 10)

Definition at line 95 of file timeseries.py.

tuple starmac_tools::timeseries::t2 = np.linspace(0.1,12.5,20)

Definition at line 97 of file timeseries.py.

tuple starmac_tools::timeseries::x1 = np.sin(t1)

Definition at line 96 of file timeseries.py.

tuple starmac_tools::timeseries::x2 = np.cos(t2)

Definition at line 98 of file timeseries.py.